CN2696247Y - 传送块组分段基站 - Google Patents
传送块组分段基站 Download PDFInfo
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- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B23/00—Packaging fragile or shock-sensitive articles other than bottles; Unpacking eggs
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1835—Buffer management
- H04L1/1845—Combining techniques, e.g. code combining
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- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
- B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
- B65B43/34—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by internal pressure
- B65B43/36—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by internal pressure applied pneumatically
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1874—Buffer management
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B59/00—Arrangements to enable machines to handle articles of different sizes, to produce packages of different sizes, to vary the contents of packages, to handle different types of packaging material, or to give access for cleaning or maintenance purposes
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Abstract
使用自适应调制和编码的基站,发送一个传输时间间隔的数据,并且基站具有一个物理层混合自动重复请求装置。该基站包括一个发射机。该发射机耦合到一个天线和它用第一特定的调制和编码方案发送传送块组。该发射机能够用于发射传送块组的分段。至少两个分段被分别发射。一个自动重复请求接收机接收一个重复请求。一个自适应调制和编码控制器被耦合到该发射机并改变特定的调制和编码组到第二特定的调制和编码组。一个分段设备响应于接收一个重复请求并改变到第二特定调制和编码组,按照发射机的针对传输的分段信息把发射块组分段成多个段。
Description
技术领域
本实用新型一般涉及无线通信系统。特别的,本实用新型涉及在这样系统中的数据传输,其中应用了自适应调制和编码(AMC)以及混合自动重复请求(H-ARQ)技术。
背景技术
在无线通信系统中,比如第三代伙伴计划(3GPP)时分双工(TDD)或使用码分多址(CDMA)的频分双工(FDD)通信系统,或者正交频分多路(OFDM)系统,AMC被用于优化空中资源的利用。
用于发送数据的调制和编码方案(设置)基于无线信道条件是变化的。为了示例,一个数据编码的类型(比如turbo versus卷积编码),编码率,用于CDMA系统的的扩展因子,调制类型(比如四相移键控M-ary相移键控对比M-ary正交调幅调制),和/或用于一个OFDM系统的许多子载波可以改变。如果信道特性提高,一个较低的数据冗余和/或“较小的可靠性”调制和编码设置被用于传送数据。作为结果,对于一个给定的无线资源的分配,被传送的更多的用户数据导致一个较高的有效的数据率。相反,如果信道特性降低,一个较高的数据冗余和/或“更加可靠的”调制和编码设置被使用,传送较少的用户数据。使用AMC,在空中资源利用和服务质量(QOS)之间的一个优化能被更好的保持。
在这样系统中的数据在传输时间间隔(TTI)中经空中接口被接收传送。传送到一个特殊用户设备的一个TTI内的数据被称作一个传送块组。对于一个特殊的空中资源的分配,一个较少的可靠性调制和编码组允许较大的TBS尺寸,并且一个更多的可靠性调制和编码组只允许较小的TBS尺寸。作为结果,用于一个给定无线资源分配的调制和编码组规定在一个给定TTI中能被支持的TBS的最大尺寸。
在该系统中,一种混合自动重复(H-ARQ)请求装置可以被用于保持QOS和提高无线资源效率。使用H-ARQ的一个系统被显示在图1中。一个发射机20使用特殊的调制和编码组经空中接口发射一个TBS。通过一个接收机26接收该TBS。一个H-ARQ解码器30解码接收的TBS。如果接收的数据的质量是不可接受的,一个ARQ发射机28请求一个重发TBS。检查接收的TBS的质量的一种方法是循环冗余码校验(CRC)。一个ARQ接收机22接收请求并且通过发射机20作出TBS的一个重发。为增加成功运送的概率,重发可以应用一个更加可靠性的调制和编码组。H-ARQ解码器90组合,接收的TBS版本。用于组合的一个需求是合并的TBS尺寸是一致的。如果最后结果的质量始终是不充分的,另一个重发被请求。如果最后结果的质量是充分的,则组合的TBS通过CRC检验,接收的TBS被释放来用于进一步的处理。H-ARQ装置允许不可接受的接收的数据在一个更可靠的MCS上能够被重发以确保成功的运送和保持期望的QOS。
另一种方法是使用旧的调制和编码组重发TBS。然而,如果信道条件规定使用一个更可靠的调制和编码组或最初的传输个别的被破坏,重发TBS的组合不会再通过,导致一个传输失败。
在使用H-ARQ和AMC的一个系统中,调制和编码组中的一个改变可以被确定以实现所需的一个请求的TBS重发的成功的运送。在该情况下,TTI内的最大量的物理数据比特允许随调制和编码组而改变。
由于每个TTI仅仅存在一个TBS,对应于TBS尺寸的有效的用户数据率应用于每个TTI。为实现最大数据率,最大的TBS尺寸被用于TTI内的最小的可靠性的调制和编码组。当无线信道条件要求更大的一个可靠性调制和编码组来用于成功传输时,这样一个TBS尺寸在TTI内不能被支持。因此,每次实现一个更大的可靠性调制和编码需求时,具有TBS尺寸的H-ARQ处理中的所有未完成的传输不被该MCS所支持,并且没有被成功确认的传输被放弃。
在当前的实现方式中,当利用AMC和H-ARQ装置不能成功地发送一个TBS时,通过无线链接控制(RLC)协议(在层二上)处理恢复。不同于失败传输的一个H-ARQ恢复,RLC错误检测,数据恢复以及节点-B中的一个TBS排队的缓冲导致增加传送信道块错误率和传输等待时间,潜在的导致不能满足QOS要求。
实用新型内容
因此,在该系统中期望具有替换的方式恢复不成功的传输以便当应用AMC和H-ARQ技术时允许支持高的数据率。
使用自适应调制和编码一个基站发送一个传输时间间隔的数据并且基站具有一个物理层混合自动重复请求装置。该基站包括一个发射机。该发射机耦合到一个天线和它用第一特定的调制和编码方案发送传送块组。该发射机能够用于发射传送块组的分段。至少两个分段被分别发射。一个自动重复请求接收机接收一个重复请求。一个自适应调制和编码控制器被耦合到该发射机并改变特定的调制和编码组到第二特定的调制和编码组。一个分段设备响应于接收一个重复请求并改变到第二特定调制和编码组,按照发射机的针对传输的分段信息把发射块组分段成多个段。
附图说明
图1是一个无线H-ARQ通信系统的一个实施例。
图2是一个分段的TBS的一个示例。
图3A是具有带外发送的一个控制消息的一个分段的TBS的一个示例。
图3B是具有分段识别符的一个分段的TBS的一个示例。
图3C是具有带外发送的分段识别符的一个分段的TBS的一个示例。
图4是具有传送序列号的一个分段的TBS的一个示例。
图5是一个分段的TBS无线通信系统的一个实施例。
图6是分段一个TBS的一个流程图。
图7是把一个TBS分段成三段的一个示例。
具体实施方式
在各种无线通信系统中能使用传送块组分段,比如FDD/CDMA,TDD/CDMA和OFDM通信系统。
为支持高数据率,大TBS尺寸被应用于每个TTI。为允许重发大的TBS尺寸,在更可靠的调制和编码组上以确保成功的运送,对TBS传输提供分段信息。图2示例了在一个TTI中带有分段信息(SI)的一个TBS。示例的TBS内的数据被分段成多个段,段1至段N。每个段被尺寸化以便具有能支持一个更可靠调制和编码组的一个数据尺寸。分段信息(SI)与TBS数据多路复用。尽管分段信息被显示成图2中的首部,当分段信息可以位于TBS传输结构内的任何位置(带内)。分段信息能被用于TBS的分段。
可选择地,图3A示例了使用控制信令发送分段信息。从分段数据在一个分离的信道上(带外)发送控制信号,段1至段N,(带内)。分段信息指示接收机中用于重构原始TBS的分段TBS的方式。
图3B示例了使用一个分段识别符(SID)来作为带内分段信息。每个段1至段N,具有一个相应的分段识别符,SID1-SID2,与分段的数据多路复用(带内)。图3C示例了使用一个SID作为带外分段信息。
图4示例了用于一个分段的TBS的优选的分段识别符。媒体存取控制器(MAC)分配一个传输序列号(TSN)到每个潜在的段。如果TBS被分段,每个段的数据相关于那个段的TSN。如图4所示,每个段具有它自己的TSN,TSN1-TSNN。在利用H-ARQ的一个无线通信系统中,TSN被分配到每个TBS以允许顺序的处理。使用TSN作为一个分段识别符,减少了所需的修改和最小化了容纳分段的系统的附加的复杂性。
图5是用于以分段重发一个TBS的一个发射机44和一个接收机46的一个简化图。发射机44可以被定位在一种用户设备或一个基站/节点-B上。接收机46可以被定位在一个基站/节点-B或一种用户设备上。在当前的系统实现中,典型的是AMC只用于下行链路中。因而,针对下行链路,优选的传送块分段的实现被用于支持AMC。对于在上行链路中使用AMC的其他的系统,传送块分段能被应用于上行链路。
一个发射机30经空中接口36发射一个TBS。一个接收机38接收发射的TBS。一个H-ARQ解码器42解码每个接收的TBS。如果TBS不符合质量测试,由ARQ发射机40作出用于重发的一个请求。一个ARQ接收机32接收该请求并直接对TBS重发。通过H-ARQ解码器42组合重发的TBS并执行另一个质量测试。一旦TBS通过质量测试,它被释放来用于进一步的处理。
此外,图5中显示了一个AMC控制器34。如果信道条件改变,AMC在调制和代码组中可以启动一个改变来用于传送数据。图6是一个流程图,示例了H-ARQ重发之间的出现在AMC中的这样的一个改变。一个发射的TBS不符合质量测试和一个重发被请求,(步骤50)。为了使用图7示例,一个TBS被发射和接收的传输不符合质量测试,如所示的一个“X”。它确定到一个更好的可靠调制和编码组的一个改变来满足成功的传输,(步骤52)。由于需要一个更可靠的调制和编码组,相同尺寸的TBS的重发会是不可能的。H-ARQ处理被复位和使用TBS分段设备46分段TBS,(步骤54)。典型的,使用物理层分段,对于适当的操作不需要复位H-ARQ处理。原始TBS的段的每个段和子集是在与新的调制和编码组兼容的一个尺寸上。使用图7示例,原始TBS被分段成三个段,段1,段2和段3。在更可靠的调制和编码组上重发诸段,(步骤56)。
段的每个段或子集使用新的调制和编码组被分别重发。如图7所示,段1,段2和段3被分别重发和接收。此外,还能够取决于调制和编码的选择,任何子集可以被分别发射和接收(段1&段3,或者段2&段3,等等)。如果一个短或段的子集的一个传输失败,ARQ发射机40请求诸段的那个段或子集的一个重发。诸段的段或子集的传输或重发被组合,直到诸段的段或子集通过质量测试为止。
为减少由分段信息要求的增加的额外开销,当分段选项被利用时节点-B选择的规定。为示例,如果信道条件正在下降或被预计下降,分段选项可以被利用。这种确定可以基于信道质量测量,针对特定调制和编码组的先前的传输成功/失败率,或其他的准则。一个分段控制器48,最好是在节点-B中,如图5所示,决定是否支持分段。分段控制器与MAC协同操作以便把分段信息添加到TBS中。分段决定可以基于各种因素,比如小区负载,增加的用户,先前的重发数和测量的信道质量。
Claims (1)
1.一种使用自适应调制和编码的用于发射一个传送块组的数据的基站,其具有一种物理层混合自动重复请求装置,其特征在于该基站包括:
一个发射机,耦合到一个天线,用于以第一特定的调制和编码方案发送传送块组,并能够用于发射传送块组的分段,至少两个分段被分别发射;
一个自动重复请求接收机,用于接收一个重复请求;
一个自适应调制和编码控制器,耦合到该发射机,用于改变特定的调制和编码组到第二特定的调制和编码组;和
一个分段设备,响应于接收一个重复请求并改变到第二特定调制和编码组,用于按照发射机的针对传输的分段信息把发射块组分段成多个段。
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WO2018068241A1 (zh) * | 2016-10-12 | 2018-04-19 | 广东欧珀移动通信有限公司 | 传输数据的方法、接收端设备和发送端设备 |
CN109728874A (zh) * | 2017-10-31 | 2019-05-07 | 华为技术有限公司 | 一种比特块处理方法及节点 |
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US8233501B2 (en) | 2002-02-13 | 2012-07-31 | Interdigital Technology Corporation | Transport block set segmentation |
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WO2019085879A1 (zh) * | 2017-10-31 | 2019-05-09 | 华为技术有限公司 | 一种比特块处理方法及节点 |
CN109728874B (zh) * | 2017-10-31 | 2021-08-31 | 华为技术有限公司 | 一种比特块处理方法及节点 |
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